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PATENTED FEB. 2, 1904.

L. GRAUBL. SIGNALING APPARATUS APPLIOATION HLD MAR. 19. 190s.

2 SHEETS-SHEET 1.

N0 MODEL.

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PATENTBD FEB. 2, 1904.

E. L. GRAUEL. SIGNALING APPARATUS.

APPLIUATION FILED MAB.. 19, 1903.

2 SHEETS-SHEET 2.

NO MODEL.

lllllllllll UNITED STATES Patented February 2, 1904.`

PATENT OFFICE.

EDVIN L. GRAUEL, OF ROCHESTER, NEW YORK, ASSIGNOR TO NATIONALTELEGRAPHONE COMPANY, OF ROCHESTER, NEW YORK, A CORPORA- TION OF NEWJERSEY.

SIGNALING APPARATUS- SPECIFICATION forming part of Letters Patent No.751,071, dated February 2, 1904- Application tiled March 19, 1903.

To @ZZ whom, it 17mg concern:

Beit known that I, EDWIN L. GRAUEL, a citizen ofthe UnitedStates,residing at Rochester, in the county of Monroe, State of NewYork,have invented certain new and useful Improvements in Make-and-BreakSignaling Apparatus; and I hereby declare the following to be a full,clear, and exact description of the same, reference being had to theaccompanying drawings, in which- Figure l is a plan view of theapparatus, the parts being in the relative positions they occupy whenthe mechanism is not in operation. Fig'. 2 is a vertical central sectiontaken through the upper or driving axle of the device and looking in thedirection of the arrow, Fig. l, the upper interior axle and the loweraxle and its pinion being in side elevation. Fig. 3 is a section on theline 3 3, Fig. l, looking toward the operating crank or handle. Fig. 4is an end elevation of the device, the electric brush being in contactwith the dead or insulated segment of the commutator. Fig. 5. is a viewsimilar to Fig. 4, the electric brush being on the live or metal segmentof the commutator. Fig. 6 is a perspective view of the driving-clutch,the spring omitted; Fig. 7 is a perspective View of the upper hollowaxle with driving-gear attached. Fig. 8 is a perspective view of theplug-projecting axle. Fig. 9 is a perspective view of the spring-contactprojecting insulated plug. Figs. 6, 7 8, and 9 are positioned to showthe relative arrangement of the parts thus illustrated. Fig. IO is aplan view of the insulated plug and a portion of the plug-projectingaxle in the potion they occupy when the spring-contact contacts with thehollow axle and the circuit is completed through the frame of themachine. Fig. ll is a plan view of the insulated plug and a portion ofthe plug-projecting axle, showing the position they occupy when thecontact between the spring-contact and hollow axle is broken and thecircuit through the frame is open. Y

Like symbols refer to like `parts wherever they occur.

My invention relates to the construction of Serial No. 148,563. (Nomodel.)

make-and-break signaling apparatus for calling upon the relays oftelegraph-lines when it is desired to annunciate a rapid, steady, andextended signal which vshall be unmistakable in its character, suchdevice being permanently in series with the line-wire and adapted whenactuated to make and breakthe circuit of such line-wire and toautomatically close such circuit when the apparatus is not in operation.

To this end the main feature of my invention embraces in combination aspring-contact member, a spring-contact projecting core or insulatedplug adapted to be projected longitudinally by the rotation of adriving-axle, a brush mounted upon said spring-contact mem-V ber, and acommutator having insulated and uninsulated sections or segmentsrotatable simultaneously with the driving-axle whereby when themechanism is operated a regular and well-defined intermittent signalwill be announced upon the relays of the line-wire with with which thedevice is in series.

There are other minor features of invention, all as will hereinaftermore fully appear.

I will now proceed to describe my invention more fully, so that othersskilled in the art to which it appertains may apply the same.

In the drawings, A is a metallic frame, in the upper portion of which isjournaled a hollow axle B, said axle having a'transverse peripheral slotlb and a longitudinal peripheral slot 2b. Secured to the hollow axle Bby a spline 3b or in other suitable manner is a driving gear-wheel C,said gear-wheel C havingo eninvs 1e into which roject hws or stops ld,which are integral with theV driving clutch-cap D and which when thecrank E is rotated engage the walls of the openings lc to positivelydrivel the gear-wheel C and the pinion meshing therewith. Within thepocket H, between the members D and C, is a spring F, said spring beingsecured at one end to the driving gear-wheel C, as at 2c, and at theother end to the clutch-cap D, as at 2d, said spring being adapted to beput under strain by the relative movement of the clutch-cap D andgearwheel C, which occurs at the initial movement of the crank E, therelative movements of the parts D and C causing a corresponding relativerotation of the hollow axle B and its interior core-projecting axle G,which latter revolves with the crank E and clutch-cap D.

Secured to the hollow axle B by a set-screw lk or in other suitablemanner is a collar K, against which and the inner side of the side frameA bears a spring L, said spring by its frictional bearing between theframe and the collar K creating suilicient resistance to allow thespring F to be put under strain. The core or plug projecting axle `Gr isprovided with a dowel or guide-lug lg, which projects into theperipheral slot lb of the axle B, and said slot prevents anylongitudinal motion of the axle G. The end of theaxle G which terminateswithin the hollow axle B is provided with a double-inclined groove 2g,into which ts the correspondingly reversely inclined end lp of theinsulated core or plug P, said plug P being also provided with a dowelor guide-lug 2p, which projects into the longitudinal peripheral slot 2bof the hollow axle B and which permits the relative longitudinalmovement of said plug P and hollow axle B.

Meshing with driving gear-wheel C is a pinion Q, which is secured to theaxle R, said axle R being journaled in the Jframe A and having at itsopposite end the commutator S, which latter is composed of alternatesegments lS 2s, the former being metallic and connected to the axle R bythe screw 3s and the latter being of insulating material.

T is an electric brush which is mounted upon the spring-contact member Vand which bears upon the periphery of the commutator S; but said brushmay be mounted in any other manner, provided it be insulated from theframe A and electrically connected with the spring-contact member V.

Mounted upon the frame A and insulated therefrom by an insulating memberW is a spring-contact member V, which when the mechanism is not inoperation contacts the outer end of the hollow axle B, thus electricallyconnecting said spring-contact member V with the frame A, (see Fig. 1,)but which when the mechanism is in operation is forced out of contactwith the end of said axle B by the projection of the insulated core orplug P, thus opening the circuit through the springcontact member V andframe A.

X and Y are portions of the line-wire of the circuit the energy of whichit is desired to inuence by the operation of the device, said wires Xand Y being respectively connected to the spring-contact member V, as atl and to the frame A, as at ly.

For the purpose of lubricating the bearings of hollow axle B oil-ports bb are provided, and dust-guards a a for the several journals may be alsoprovided, if desired.

The construction of the device being substantially as herein pointedout, its operation will be as follows: When the device is not inoperation, it will readily be seen that the circuit from X to Y isalways closed through spring-contact member V, hollow axle B, and thencethrough frame A, in which said hollow axle B is journaled to thebinding-post ly, and thence to Y. Upon actuating the operating-crank orhandle E of the device the clutch-cap D and interior core orinsulatedplug projecting axle first rotate relative to the drivinggear-wheel C and hollow axle B, the latter members being held againstrotating by the frictional contact of the spring L upon the collar K andframe A, and this relative rotation of the parts before mentionedcontinues, thus putting the spring F under strain until the lugs orstops l1 of the clutch-cap D engage the walls of the openings lc of thedriving gear-wheel C, when clutch-cap D, gear-wheel C, and axles B and Grevolve in unison. The relative rotation of the parts above referred tocauses the incline 2g of the plug or core projecting axle G to act uponthe reversely-inclined end lp of the insulated core or plug P, thusprojecting said core or plug longitudinally or' the hollow axle B, inwhich direction relative to said axle B it may only move on account ofthe dowel or guidepin 2p and longitudinal peripheral slot 2b, with theresult that the spring-contact member V is unseated from the end of thehollow axle B and the circuit which was normally closed through suchspring-contact member, thence through the hollow axle B, and frame A isbroken at this point and remains open during the continued operation ofthe device and until power ceases to be applied to the operatingcrank E,when the energy stored in the spring F by the initial relative rotationof the clutchcap D, gear wheel C, and their respective axles Gr and Bcauses a relative rotation of the same parts, but in a reversedirection, thus permitting the spring-contact member V to return theinsulated core or plug P to its inoperative position and therebyautomatically close the circuit through such spring-contact member V,hollow axle B, and frame A. The insulated core or plug P having beenprojected as above described and the spring-cap D and driving gear-wheelC being driven in unison by the continued application of power to theoperative crank or handle E, it will be seen that the commutator S iscaused to revolve through the agency of pinion Q, which meshes withdriving gear-wheel C and axle R, whereby the insulated and uninsulatedsegments of the commutator S are alternately brought into contact withthe brush T, and the circuit from X to Y is either open, as when thebrush is upon the insulated or dead segment 2s, or closed, as when thebrush is upon the uninsulated or live segment l5, in which latter casethe circuit is closed from X to Y through the lower portion of thespringcontact member V, brush T, uninsulated com- IOO mutator -segment1S, screw 3s, commutatoraxle R, and frame A to binding-post ly, andthence to Y. vA well-delined, rapid, and extended signal may thus beannounced upon any instruments in the circuit with which this device isplaced in series which would be iniiuenced by intermittentlyinterrupting the energy of such circuit.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

l. In a mechanism oi' the character indicated, the combination with aframe, of a hollow axle journaled therein, a spring-contact memberarranged to engage said hollow axle when the latter is at rest, andmeans for insulating said spring-contact member and hollow axle fromeach other when the mechanism is in operation, substantially as and forthe purposes specified.

2. In a mechanism of the character indicated, the combination with aframe, of a hollow axle journaled therein, a core-projecting axle withinsaid hollow axle, an insulated core contacting said core-projecting axleand located within said hollow axle, and means for causing a relativerotation of the hollow axle and coreprojecting axle whereby theinsulated core is projected longitudinally with respect to said hollowaxle, substantially as and for the purposes specilied.

3. In amechanism ofthe character indicated, the combination with aframe, of ahollow axle journaled therein, a core-projecting axle withinsaid hollow axle said core-projecting axle having a doubleeinclinedgroove in one end, an insulated core having a reversely-inclined endcontacting the double-inclined end of the core-projectingaxle saidinsulated core located within said hollow axle, and means for causing arelative rotation of the insulated core and the core-projecting axlewhereby the inclined end of said core-projecting axle acts upon thereversely-inclined end of the insulated core to cause a relativelongitudinal movement oi' said core and the hollow axle, substantiallyas and for the purposes specilied.

t. In a mechanism of the character indicated, the combination with aframe, of a hollow axle journaled therein, an insulated core within saidhollow axle, a core-projecting axle also within said hollow axle, agear-wheel secured to said hollow axle, a clutch-cap'secured to saidcoreprojecting axle, and means for causing a rela-` tive rotation ofsaid hollow axle and its gearwheel and the core-projecting axle and itsclutch-cap whereby the said insulated core is projected longitudinallywith respect to said hollow axle, substantially as and for the purposesspeciiied.

5. In a mechanism of the character indicated, the combination with aframe, oi' a hollow axle journaled therein said hollow axle having ative rotation of the hollow axle and core-projecting axle, and a springsecured to the gearwheel and to the clutch-cap whereby said hollow axleand said core-projecting axle are relatively rotated in reversedirection, substantially as and for the purposes speciiied.

i 6. In amechanism ofthe character indicated, the combination with aframe, of a hollow axle journaled therein said hollow axle having alongitudinal peripheral slot and a transverse peripheral slot, aninsulated core located within said hollow axle and provided with aguidelug which engages the longitudinal peripheral slot of said hollowaxle, a core-projecting axle located within said hollow axle and havinga guide-lug which engages vthe transverse peripheral slot of said hollowaxle, and means for causing a relative rotation of said hollow axle andsaid core-projecting axle whereby said insulated core is projectedlongitudinally of said hollow axle, substantially as and for thepurposes specied.

7. In a mechanism of the character indicated, the combination lwith aframe, of an axle journaled therein, a spring-contact member insulatedfrom said frame and arranged to engage said axle when the latter is atlrest, a commutator-brush mounted on said springcontact member andcontacting a commutator, a commutator having alternate segmentsinsulated and uninsulated with respect to said frame, and means forinsulating said springcontact member and axle from each other andsimultaneously rotating said commutator in cont-act with said brush,substantially as and for the purposes speciiied.

8. In a mechanism of the character indicated, the combination with aframe, of a spring-contact member arranged to close the circuit throughsaid frame when the mechanism is not in operation and to be insulatedfrom said frame when the mechanism is in operation, of acommutator-brush electrically Vconnected to said spring-contact memberand insulated from said frame said brush contacting the periphery ofcommutator, a commutator having segments alternately insulated anduninsulated with respect to said frame, and means for rotating saidcommutator when the spring contact member is insulated from said frame,substantially as and for the purposes speciiied.

In testimony whereof I aflix my signature,in presence of two witnesses,this 13th day of March, 1903.

EDWIN L. GRAUEL.

Witnesses:

G. E. MILLIGAN,` GERALD E. MERCHANT.

